Flexible keyboard



FIG. 1 is a perspective view of a flexible keyboard;

FIG. 2 is a top plan view of the flexible keyboard;

FIG. 3 is a bottom plan view of the flexible keyboard;

FIG. 4 is a front elevation view of the flexible keyboard as shown in FIG. 2;

FIG. 5 is a rear elevation view of the flexible keyboard as shown in FIG. 3;

FIG. 6 is a left side elevation view of the flexible keyboard;

FIG. 7 is a right side elevation view of the flexible keyboard; and,

FIG. 8 is a perspective view showing the flexible keyboard folded. 

The ornamental design for a flexible keyboard, as shown and described. 